Mugai Nyodai (Japanese: 無外如大, 1223–1298), was one of the first Zen abbesses and the first female Zen master in Japan. A disciple of Mugaku Sogen, she organized convents and spread the lessons of Rinzai Zen. The only surviving written accounts of her life date to more recent centuries, and so many details of her biography are unclear.
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- Fister, Patricia (5 July 2018). "Commemorating Life and Death: The Memorial Culture Surrounding the Rinzai Zen Nun Mugai Nyodai". Women, Rites, and Ritual Objects in Premodern Japan. Brill. ISBN 9789004368194.